balance scales

A balance scale is a device used to compare the weight of two objects. It consists of a horizontal beam balanced on a central pivot, with objects placed on either end. When the weights are equal, the beam stays level; if not, it tilts toward the heavier object. By adjusting known reference weights or measuring the tilt, you can determine an object's weight accurately. Balance scales are commonly used in laboratories and markets for precise measurement, relying on the principle of equilibrium to compare weights directly without relying on units like pounds or kilograms.